<template>
	<div class="list" ref="wrapper">
		<div>
			<div class="area">
				<div class="title border-topbottom">当前城市</div>
				<div class="button-list">
					<div class="button-wrapper">
						<div class="button">
							<span class="button-title-icon iconfont">&#xe60d;</span>
							{{this.currentCity}}
						</div>
					</div>
				</div>
			</div>
			<div class="area">
				<div class="title border-topbottom">热门城市</div>
				<div class="button-list">
					<div class="button-wrapper"
						v-for="item of hotCities"
						:key="item.id"
						@click="handleCityClick(item.name)"
						>
						<div class="button">{{item.name}}</div>
					</div>
				</div>
			</div>
			<div class="area"
				v-for="(item,key) of cities"
				:key="key"
				:ref="key"
				>
				<div class="title border-topbottom">{{key}}</div>
				<div class="item-list">
					<div class="item border-bottom"
						v-for="innerItem of item"
						:key="innerItem.id"
						@click="handleCityClick(innerItem.name)">
						{{innerItem.name}}
					</div>
				</div>
			</div>
		</div>
	</div>
</template>

<script>
import Bscroll from 'better-scroll'
import {mapState} from 'vuex'
//-------------
// import {mapState,mapMutations} from 'vuex'
export default {
	name: 'CityList',
	props: {
		hotCities: Array,
		cities: Object,
		letter: String
	},
	computed: {
		...mapState({
			currentCity: 'city'
		})
	},
	methods: {
		handleCityClick (city) {
			this.$store.commit('changeCity',city)
			this.$router.push('/')
		}
		// ----------
		// handleCityClick (city) {
		// 	this.changeCity(city)
		// 	this.$router.push('/')
		// },
		// ...mapMutations(['changeCity'])
	},
	mounted () {
		//传入当前标签this.$refs.wrapper
		this.scroll = new Bscroll(this.$refs.wrapper)
	},
	//侦听器  letter的改变
	watch: {
		letter () {
			if (this.letter) {
				const element = this.$refs[this.letter][0]
				this.scroll.scrollToElement(element)
			}
		}
	}
}

</script>

<style lang="stylus" scoped>
@import '~styles/varibles.styl'
	.list
		background: #fff
		position: absolute
		top: 1.58rem
		left: 0
		bottom: 0
		right: 0
		overflow: hidden
		.border-topbottom
			&:before
				border-color: #ccc
			&:after
				border-color: #ccc
		.border-bottom
			&:before
				border-color: #ccc
		.title
			line-height: .6rem
			background: #eee
			padding-left: .2rem
			color: #666
			font-size: .24rem
		.button-list
			padding: .1rem .6rem .1rem .1rem
			overflow: hidden
			.button-wrapper
				float: left
				width: 33.33%
				.button
					margin: .1rem
					text-align: center
					border: .02rem solid #ccc
					padding: .1rem
					border-radius: .06rem
					.button-title-icon
						color: $bgColor
		.item-list
			.item
				line-height: .76rem
				padding-left: .2rem
</style>
